Therapeutic electrolysis device

ABSTRACT

An electrolysis device is provided. The electrolysis device includes an ionizer unit having first and second plate assemblies that each provide a different surface area that is contacted by water when the unit is in use. The plate assemblies may each provide a different surface area by providing a different number of plates. The plate assemblies are formed from integral pieces of material, to enhance the reliability of the device. The present invention further provides a control unit programmed to provide an output to the ionizer unit that varies in polarity over time.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 10/396,188 filed Mar. 24, 2003, which claims the benefit of U.S. Provisional Patent Application Ser. No. 60/366,773, filed Mar. 22, 2002, the entire disclosures of which are incorporated by reference herein.

FIELD OF THE INVENTION

The present invention relates to an electrolysis device for use in connection with therapeutic purposes. In particular, the present invention relates to a device capable of efficiently ionizing water for therapeutic uses.

BACKGROUND OF THE INVENTION

Electrolysis involves ionizing water by passing an electrical current through water. When water is ionized, the individual water molecules are split into their constituent elements, namely hydrogen ions (H+) and hydroxy ions (OH−).

By creating a preponderance of either negative ions or positive ions in water, desirable effects can be realized. For example, it is believed that charged particles can be drawn from the body by placing a body part, such as the feet, in a water bath having a preponderance of negative ions or of positive ions. For example, metal cations are attracted to alkaline water, or water in which a preponderance of negative ions has been produced.

Existing electrolysis devices for use in connection with therapeutic applications are inefficient. In particular, such devices require a relatively large amount of electrical power, while producing a relatively small shift in the number of positive ions present in the water relative to the number of negative ions present in the water. In addition, existing devices have been unreliable. In particular, such devices have suffered from failures in connections between components made at locations that are under water when the device is in operation.

In addition, existing devices typically provide for timed control of the electrolysis process. However, no provision is generally made for automatically alternating between producing a preponderance of negative ions and producing a preponderance of positive ions.

For the reasons set forth above, it would be desirable to provide an electrolysis device for therapeutic purposes that was capable of efficiently creating a preponderance of negative or positively charged ions in a water bath. In addition, it would be desirable to provide such a device that eliminated electrical connections between separately formed components in locations that are submerged in the water bath during operation of the device. Furthermore, it would be advantageous to provide a device that incorporated a controller capable of assisting a user in achieving the desired therapeutic effect. In addition, it would be desirable to provide such a device that was economical to produce.

SUMMARY OF THE INVENTION

The present invention relates to an electrolysis device that ionizes water for use in connection with therapeutic purposes.

The present invention generally includes an ionizer unit having two integral plate assemblies, a control unit, and a power conduit. Each of the plate assemblies has a terminal portion. In accordance with an embodiment of the present invention, the first of the two plate assemblies has an odd number of plates while the second plate assembly has an even number of plates. In accordance with another embodiment of the present invention, the first and second plate assemblies have different surface areas. To create the electric field necessary to effectively ionize water, the plate assemblies are interposed such that plates of the plate assembly with an odd number of plates is separated by a gap from plates of the plate assembly with an even number of plates. In order to maintain the gaps between the plates, the plate assemblies may be held by or within a frame. Each plate assembly includes an electrical terminal that is interconnected to a corresponding terminal of the control unit by a conduit. In accordance with still another embodiment of the present invention, the plate assemblies are formed from integral pieces of material, removing the need to form interconnections between the plates of a given plate assembly during manufacture.

According to an embodiment of the present invention, the current output by the terminals of the control unit is limited. In addition, the polarity of the output at the terminals of the control unit may be varied according to stored programs, or according to a selection entered by a user.

The present invention also provides a method for ionizing water. According to the method, an output voltage is provided at the terminals of a power unit for a first period of time, the polarity at the output terminals is switched and the second polarity is provided for a second period of time. According to other embodiments, various output polarities and associated times may be available for selection by a user as preprogrammed outputs.

Additional advantages and features of the present invention will become more apparent from the following description, particularly when taken together with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a therapeutic electrolysis system in accordance with an embodiment of the present invention;

FIG. 2 is a block diagram illustrating the interrelationship between components of a therapeutic electrolysis system in accordance with an embodiment of the present invention;

FIG. 3 is a side view of an ionizer unit in accordance with an embodiment of the present invention;

FIG. 4 is a side view of the plate assemblies of the ionizer unit in their assembled relationship to one another, in accordance with an embodiment of the present invention;

FIG. 5 is a top view of the plate assemblies of FIG. 4;

FIGS. 6A and 6B are plan views of plate assemblies in accordance with an embodiment of the present invention, prior to folding of the assemblies;

FIG. 7 is a schematic diagram depicting the flow of electrons through plate assemblies in accordance with an embodiment of the present invention;

FIG. 8 is a flow diagram depicting operation of a therapeutic electrolysis system in accordance with an embodiment of the present invention;

FIG. 9 is a circuit diagram for a control unit in accordance with an embodiment of the present invention; and

FIG. 10 is a graph showing test results for a system in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION

In accordance with the present invention, a method and apparatus for providing a therapeutic electrolysis device are disclosed.

In FIG. 1, a therapeutic electrolysis system 100 in accordance with an embodiment of the present invention is depicted. In general, the therapeutic electrolysis system includes an ionizer unit 104 interconnected to a control unit 108. In addition, the therapeutic electrolysis system 100 includes a basin 112. Furthermore, in operation, the therapeutic electrolysis system 100 utilizes water 236 (see FIG. 2) held in the basin 112.

FIG. 2 depicts a therapeutic electrolysis system 100 in accordance with an embodiment of the present invention in block diagram form. As can be seen in FIG. 2, the ionizer unit 104 includes a first electrical terminal 204, which is interconnected to a first switchable electrical terminal 212 on the control unit 108 by a first electrical conductor or conduit 220. Similarly, the second electrical terminal 208 of the ionizer unit 104 is interconnected to a second switchable terminal 216 of the control unit 108 by a second electrical conductor or conduit 224. In general, the first 212 and second 216 switchable terminals of the control unit 108 are switchable in that the polarity of a voltage across the switchable terminals 212, 216 may be selectively reversed. In accordance with an embodiment of the present invention, the control unit 108 supplies 24V DC at the switchable terminals 212, 216. A power source 228 provides electrical power to the control unit 108 over power supply cord 232. In accordance with an embodiment of the present invention, the power source 228 is a line voltage source.

The water basin 112 is shown in FIG. 2 as holding a quantity of water having ions 236, such as ordinary tap water. The water 236 partially submerges the ionizer unit 104. In particular, the water 236 is preferably held to a level that does not submerge the first 204 and second 208 electrical terminals of the ionizer unit 104.

With reference now to FIG. 3, an ionizer unit 104 in accordance with an embodiment of the present invention is shown in a side view. In general, the ionizer unit 104 includes a frame assembly 304 having a front plate 308, a back plate 312, a pair of side plates 316, 320, and a top plate 324. The frame assembly 304 is preferably formed from a non-conductive material. In accordance with an embodiment of the present invention, the frame assembly 304 is formed from plastic. The frame assembly 304 may be held together by an adhesive. Alternatively, or in addition, the frame assembly 304 may be held together by a screw 328 and associated nut 332. The screw 328 may be inserted through a sleeve 336. The sleeve 336 may function as a spacer to maintain a desired distance between the front 308 and back 312 plates. In addition or alternatively, the sleeve 336 may comprise a catalytic material or compound. For example, the sleeve 336 may comprise zinc or copper. The nut 332 may be configured to allow a user to easily change the catalytic material comprising the sleeve 336. For example, in accordance with an embodiment of the present invention, the nut 332 is a wing nut. Where a sleeve 336 formed from a catalytic material is used, the level of the water 236 when the ionizer unit 104 is in use should be such that the sleeve 336 is partially or fully submerged.

The top plate 324 of the frame 304 provides a mounting point for the first 204 and second 208 electrical terminals. A hanger 340 is provided for suspending the ionizer unit 104 over the edge of the basin 112 (see FIG. 1).

The frame 304 supports a first integral plate assembly 344 and a second integral plate assembly 348. The first integral plate assembly 344 generally comprises an odd number of substantially parallel plates 352. The second integral plate assembly 348 generally comprises an even number of substantially parallel plates 356. The frame 304 holds the first plate assembly 344 in a fixed position with respect to the second plate assembly 348. Specifically, the frame 304 holds the plate assemblies 344, 348 such that the plates 352 of the first plate assembly 344 are interleaved with and spaced apart from the plates 356 of the second plate assembly 348. More specifically, a plate 352 of the first plate assembly 344 is interspersed between each adjacent plate 356 of the second plate assembly 348.

With reference now to FIGS. 4 and 5, the first 344 and second 348 plate assemblies are shown in a side view (FIG. 4) and a top view (FIG. 5). As noted above, the first plate assembly 344 comprises an odd number of plates 352, while the second plate assembly 348 comprises an even number of plates 356. The plates 352 of the first plate assembly 344 are electrically interconnected to one another in series by connecting portions 404, shown as first connecting portion 404 a and second connecting portion 404 b. Similarly, the plates 356 of the second plate assembly 348 are electrically interconnected to one another in series by connecting portions 408, shown as first connecting portion 408 a, second connecting portion 408 b, and third connecting portion 408 c. The first integral assembly 344 also includes a terminal portion 412 that electrically interconnects the plates 352 to the first terminal 204. Similarly, the second integral plate assembly 348 includes a terminal portion 416 for electrically interconnecting the plates 356 to the second electrical terminal 208. The terminal portions 412, 416 are generally formed so that the electrical terminals 204, 208 are above the water 232 when the ionizer unit is in operation.

With reference now to FIG. 6A, a first integral plate assembly 344 is illustrated in a prefolded, preassembled condition. As shown in FIG. 6A, the first integral plate assembly 344 is formed from a single piece of material. For example, the first integral plate assembly 344 may be formed from a sheet of electrically conductive stainless steel having a thickness of about 0.05″. In general, the first integral plate assembly 344 is formed by cutting a blank, illustrated in FIG. 6A, from a sheet of material. The material is then folded such that the plates 352 are substantially parallel to one another, and such that the terminal 412 extends away from the plates 352 (see FIGS. 3, 4 and 5).

Similarly, in FIG. 6B, a second integral plate assembly 348 is illustrated in prefolded, preassembled form. The second plate assembly 348 is formed from a single piece of material, such as a sheet of electrically conductive stainless steel that is about 0.05″ thick. In general, the second integral plate assembly 348 is formed by cutting a blank, illustrated in FIG. 6B, from a sheet of material. The material is then folded such that the plates 356 are substantially parallel to one another, and such that the terminal 416 extends away from the plates 352 (see FIGS. 3, 4 and 5).

In accordance with an embodiment of the present invention, the plates 352 of the first integral plate assembly 344 each have a surface area that is about equal to the surface area of the plates 356 of the second integral plate assembly 348. However, because an odd number of plates 352 are provided in connection with a first integral plate assembly 344, and an even number of plates 356 are provided as part of the second integral plate assembly 348, the surface areas of the first 344 and second 348 integral plate assemblies differ. According to alternative embodiments, the first plate assembly 344 may have plates 352 that are a different size from the plates 356 of the second plate assembly 348, so that the total surface areas of the plate assemblies 344, 348 differs, even if the plate assemblies 344, 348 have the same number of plates 352, 356. As shown in FIGS. 6A and 6B, the plates 352, 356 can have a square shape. However, as can be appreciated by one of skill in the art, other shapes, such as rectangular, circular, or octagonal can be used.

In addition, it will be appreciated that the use of a single, integral piece of material to form the first integral plate assembly 344, and the use of a single, integral piece of material to form the second integral plate assembly 348, removes the need to interconnect discrete pieces of material. In particular, the use of single pieces of material for each of the plate assemblies 344, 348 removes the need to create interconnections between discrete pieces of material that will be submerged when an ionizer unit 104 comprising the integral plate assemblies 344, 348 is in use. This simplifies manufacture, and improves the reliability of the ionizer unit 104 as compared to conventional devices.

As shown in FIGS. 3, 4 and 5, the integral plate assemblies 344, 348 are not in metal to metal contact with one another. However, when the ionizer unit 104 is placed in water 236, electrolytic conduction between the plates is possible. In electrolytic conduction, charge is carried between the anode and cathode of the ionizer unit by ions in the water 236. By providing plate assemblies 344, 348 having unequal numbers of plates 352, 356, and therefore unequal surface areas, the ionizer unit 104 is believed capable of creating a preponderance of either negative ions or positive ions in the water 236. In accordance with another embodiment of the present invention, the plate assemblies 344, 348 may provide different surface areas by providing plates 352, 356 that are different sizes.

With reference now to FIG. 7, the flow of electrons through integral plate assemblies 344, 348 in accordance with the present invention that have been submerged in water 232 is depicted. In FIG. 7, the first switchable terminal 212 of the control unit 108, which is interconnected to the first integral plate assembly 344, is shown as having a positive voltage supplied to it. The second switchable terminal 216, which is interconnected to the second integral plate assembly 348, is shown as having a negative voltage supplied to it. Accordingly, electrons flow from the second switchable terminal 216, through the series connected plates 356 of the second integral plate assembly 348, and across the gaps between plates 352 and plates 356 via electrolytes in the water 232 in which the first 344 and second 348 integral plate assemblies are substantially submerged. Electrons then flow into the series connected plates 352 of the first integral plate assembly 344, and back into the control unit 108 through the second switchable terminal 212.

FIG. 7 illustrates components of the therapeutic electrolysis system 100 in a first mode of operation, which tends to promote the existence of negative ions in the water bath 232. The control unit 108 can also be operated in a second mode of operation, in which the creation of positive ions in the water bath 232 is promoted. In this second mode of operation, the electrons are supplied from the first switchable terminal 212 (i.e. the first switchable terminal 212 provides a negative voltage and the second switchable terminal 216 provides a positive voltage).

With reference now to FIG. 8, the operation of a therapeutic electrolysis system 100 in accordance with an embodiment of the present invention is depicted. Initially, at step 800, the power to the control unit 108 is turned on. The user then enters a program selection (step 804). At step 808, a determination is made as to whether run time information is required from the user. For example, run time information is required if the selected program does not include a pre-selected run time. Alternatively, or in addition, the user may choose to override a pre-selected run time. If run time information is required, the user enters the desired run time at step 812. After a run time has been entered, or after it has been determined that run time information is not required, a determination is made as to whether the user has selected the production of a preponderance of negative ions (step 816). If such a selection has been made, the control unit 108 provides a positive voltage to the first plate assembly 344 for the selected period of time (step 820).

If the user has not selected production of a preponderance of negative ions, a determination is made as to whether the user has selected the production of a preponderance of positive ions (step 824). If the user has selected the production of a preponderance of positive ions, a positive voltage is provided to the second integral plate assembly 348 for the selected run time (step 828).

If a selection of a preponderance of positive ions has not been made, the system determines whether a first alternating program has been selected (step 832). If a selection of a first alternating program has been made, a positive voltage is provided to the first integral plate assembly 344 for 70 percent of the run time, and a positive voltage is provided to the second integral plate assembly 348 for 30 percent of the selected run time (step 836).

If the first alternating program has not been selected, a determination is made as to whether a second alternating program has been selected by the user (step 840). If the user has selected the second alternating program, a positive voltage is provided to the second integral plate assembly 348 for 70 percent of the selected run time, and a positive voltage is then provided to the first integral plate assembly 344 for 30 percent of the run time (step 844).

If the second alternating program has not been selected, a determination is made as to whether the user has selected a third alternating program (step 848). If the user has selected the third alternating program, a positive voltage is provided to the first plate assembly 344 for the first 10 percent of the run time. Then, a positive voltage is provided to the second integral plate assembly 348 for the next 85 percent of the run time. Finally, a positive voltage is then provided to the first plate assembly 344 for the final five percent of the run time (step 852).

If at step 848 the third alternating program is not selected, a determination is made as to whether the power has been turned off (step 856). If the power has been turned off, the procedure ends (step 860). If the power has not been turned off, the system returns to step 804.

As can be appreciated, the selection of a particular provided program or operating mode may be made directly, or by scrolling through a menu of possible selections using provided control buttons. Furthermore, it should be appreciated that the various programs discussed in connection with FIG. 8 are provided for illustrative purposes, and that additional or alternative programs or substitute programs may be provided. In addition, it should be appreciated that additional or alternative functions may be provided in connection with the control unit 108. For instance, the control unit 108 may be programmed to issue a warning if a selected run time of a particular type exceeds a predetermined amount. As a further example, the control unit 108 may allow a user to enter customized programs.

In the examples given above in connection with FIG. 8, several possible alternating programs are disclosed. Such programs are believed to have beneficial therapeutic effects. In particular, the alteration between creating a preponderance of negative ions and creating a preponderance of negative ions in the water bath 232 is believed to be beneficial because it reduces the likelihood that too many cations (or alternatively anions) will be removed from the body of a user.

With reference now to FIG. 9, a circuit diagram for a control unit 108 in accordance with an embodiment of the present invention is illustrated. As shown in FIG. 9, the control unit 108 may include a numeric keypad 904 for receiving input information from a user. Confirmation of user selections and indications of control unit 108 status may be provided by a visual display 908. A controller 912 receives input from the numeric keypad 904 and provides output to the display 908. In addition, the controller 912 controls the output provided to the terminals 212, 216 of the ionizer unit 104 according to programs stored in memory provided as part of or associated with the controller 912. In particular, the controller 912 may control the operation of a voltage regulator 916 and the operation of an array polarity relay 920 used to reverse the polarity at the terminals 212, 216 of the control unit 108.

With reference now to FIG. 10, a chart showing the results of testing using a therapeutic electrolysis system 100 in accordance with an embodiment of the present invention is illustrated. In particular, FIG. 10 illustrates the pH of tap water over time, and while different polarities are provided at the ionizer unit 104. The elapsed time, polarity at the first electrical terminal 204, and pH reading of the water shown in FIG. 10 are summarized in Table 1 below. TABLE 1 Time (min) Polarity PH Reading 0 none 7.3 3 POS. 7.5 5 POS. 7.5 7 POS. 7.6 7 NEG. 7.6 10 NEG. 7.5 10 POS. 7.5 12.5 POS. 7.6 15 POS. 7.7

The foregoing discussion of the invention has been presented for purposes of illustration and description. Further, the description is not intended to limit the invention to the form disclosed herein. Consequently, variations and modifications commensurate with the above teachings, within the skill and knowledge of the relevant art, are within the scope of the present invention. The embodiments described hereinabove are further intended to explain the best mode presently known of practicing the invention and to enable others skilled in the art to utilize the invention in such or in other embodiments and with various modifications required by their particular application or use of the invention. It is intended that the appended claims be construed to include the alternative embodiments to the extent permitted by the prior art. 

1. A therapeutic electrolysis device, comprising: a first assembly, comprising: a terminal portion; and an electrode portion, wherein the terminal portion from the electrode portion for a distance greater than a width of the terminal portion; a second assembly, comprising: a terminal portion; and an electrode portion, wherein the terminal portion extends from the electrode portion for a distance greater than a width of the terminal portion; and a structure interconnecting the first and second assemblies.
 2. The device of claim 1, wherein a surface area of the electrode portion of the first assembly differs from a surface area of the electrode portion of the second assembly.
 3. The device of claim 1, wherein the first assembly is an integral plate assembly formed from a single sheet of planar conductive material; wherein the second assembly is an integral plate assembly formed from a single sheet of planar conductive material; wherein the electrode portion of the first assembly includes a plate portion; and wherein the electrode portion of the second assembly includes a plate portion.
 4. The device of claim 3, wherein the single piece of planar conductive material of the first integral plate assembly is folded to form a plurality of substantially parallel plates, and wherein the single piece of planar conductive material of the second integral plate assembly is folded to form a plurality of substantially parallel plates.
 5. The device of claim 3, wherein the single piece of conductive material of the first integral plate assembly comprises stainless steel.
 6. The device of claim 3, wherein at least a portion of the plate portion of the first integral assembly is parallel to at least a portion of the plate portion of the second integral assembly.
 7. The device of claim 4, wherein the plurality of substantially parallel plates of the first integral plate assembly are connected in series by integral interconnecting portions, and wherein the plurality of substantially parallel plates of the second integral plate assembly are connected in series by integral interconnecting portions.
 8. The device of claim 1, further comprising: a control unit, comprising first and second electrical output terminals; and a first electrical conductor interconnecting the first electrical output terminal to the terminal portion of the first assembly; and a second electrical conductor interconnecting the second output terminal to the terminal portion of the second assembly.
 9. The device of claim 8, wherein the control unit delivers a limited amount of current.
 10. The device of claim 1, wherein the structure comprises a frame, the frame comprising: a top plate having first and second mounting points; wherein the terminal portion of the first assembly is connected to the top plate of the frame at the first mounting point; and wherein the terminal portion of the second assembly is connected to the top plate of the frame at the second mounting point.
 11. The device of claim 1, wherein the structure comprises a frame, the therapeutic electrolysis device further comprising: a first terminal connector interconnected to the terminal portion of the first assembly, wherein the first terminal connector is also interconnected to the frame; and a second terminal connector interconnected to the terminal portion of the second integral plate assembly, wherein the second terminal connector is also interconnected to the frame.
 12. The device of claim 11, further comprising: a sleeve formed from a catalytic material, wherein the frame includes at least a first pair of opposed frame members, wherein the sleeve extends between the at least a first pair of opposed frame members, and wherein the sleeve covers a screw secured to the frame.
 13. A method for producing ions in water for therapeutic purposes, comprising: forming a first assembly by the steps of: i) providing a single piece of conductive material; ii) shaping the material to form an electrode portion and a terminal portion extending from the electrode portion; and iii) shaping the material so that the terminal portion extends away from the electrode portion; forming a second assembly by the steps of: i) providing a single piece conductive material; ii) shaping the material to form an electrode portion and a terminal portion extending from the electrode portion; and iii) shaping the material so that the terminal portion extends away from the terminal portion; interconnecting the first and second assemblies to a frame; interconnecting an end of the terminal portion of the first assembly opposite the electrode portion from which the terminal portion extends to a first electrical terminal; interconnecting an end of the terminal portion of the second assembly opposite the electrode portion from which the terminal portion extends to a second electrical terminal; submerging at least a portion of the first assembly in water; interconnecting the first electrical terminal to a first switchable terminal on a control unit; submerging at least a portion of the second assembly in water; interconnecting the second electrical terminal to a second switchable terminal on the control unit; supplying a positive voltage to the first electrical terminal and a negative voltage to the second electrical terminal for a first period of time; and supplying a negative voltage potential to the first electrical terminal and a positive voltage to the second electrical terminal for a second period of time.
 14. The method of claim 13, wherein the single piece of conductive material of the first assembly is a planar sheet of conductive material; wherein the single piece of conductive material of the second assembly is a sheet planar of conductive material; wherein the electrode portion of the first assembly includes a plate portion; and wherein the electrode portion of the second assembly includes a plate portion.
 15. The method of claim 13, wherein the frame includes a top plate having a first and second mounting points, wherein the terminal portion of the first assembly is connected to the top plate of the frame at the first mounting point, and wherein the terminal portion of the second assembly is connected to the top plate of the frame at the second mounting point.
 16. The method of claim 13, wherein at least some of the terminal portion of the first assembly is not submerged, and wherein the terminal portion of the first assembly holds the first electrical terminal above the surface of the water, and wherein at least some of the terminal portion of the second assembly is not submerged, and wherein the terminal portion of the second assembly holds the second electrical terminal above the surface of the water.
 17. The method of claim 13, further comprising: supplying a positive voltage to the first electrical terminal and a negative voltage to the second electrical terminal for a third period of time.
 18. The method of claim 13, further comprising: interconnecting a catalytic material to the frame; and submerging the catalytic material in the water.
 19. An ionizer device, comprising: a first assembly, including an electrode portion; and a terminal portion, wherein the terminal portion extends from the electrode portion for a distance that is greater than two-times a width of the terminal portion, wherein the electrode portion and the terminal portion of the first assembly are integral to one another; a second assembly, including: an electrode portion; and a terminal portion, wherein the terminal portion extends from the electrode portion for a distance that is greater than two-times a width of the terminal portion, wherein the electrode portion and the terminal portion of the second assembly are integral to one another, and a frame interconnecting the first and second assemblies.
 20. The device of claim 19, wherein the electrode portion of the first assembly includes a plate portion; and wherein the electrode portion of the second assembly includes a plate portion.
 21. The device of claim 20, wherein the frame holds the plate portion of the first plate assembly substantially parallel to and spaced apart from the plate portion of the second plate assembly.
 22. The device of claim 20, wherein the frame comprises: a top plate having first and second mounting points; wherein the terminal portion of the first assembly is connected to the top plate of the frame at the first mounting point; and wherein the terminal portion of the second assembly is connected to the top plate of the frame at the second mounting point.
 23. The device of claim 19, wherein a surface area of the electrode portion of the first assembly differs from a surface area of the electrode portion of second assembly. 